The terabit/s Super-Fragment builder and Trigger Throttling System for the Compact Muon Solenoid experiment at CERN

被引：5

作者：

Bauer, Gerry ^{[1
,2
]}

Boyer, Vincent ^{[2
]}

Branson, James ^{[3
]}

Brett, Angela

Cano, Eric ^{[2
]}

Carboni, Andrea ^{[2
]}

Ciganek, Marek ^{[2
]}

Cittolin, Seruio ^{[2
]}

Ethan, Sarrum ^{[2
,4
]}

Gigi, Dominique ^{[2
]}

Glege, Frank ^{[2
]}

Gomez-Reino, Robert ^{[2
]}

Gulmini, Michele ^{[2
]}

Mlot, Esteban Gutierrez ^{[2
]}

Gutleber, Johannes ^{[2
]}

Jacobs, Claude ^{[2
]}

Kim, Jin Cheol ^{[5
]}

Klute, Markus ^{[1
]}

Lipeles, Elliot ^{[3
]}

Perez, Juan Antonio Lopez ^{[2
]}

Maron, Gaetano ^{[6
]}

Meijers, Frans ^{[2
]}

Meschi, Emilio ^{[2
]}

Moser, Roland ^{[2
,7
]}

Murray, Steven ^{[8
]}

Oh, Alexander ^{[2
]}

Orsini, Luciano ^{[2
]}

Paus, Christoph ^{[1
]}

Petrucci, Andrea ^{[6
]}

Pieri, Marco ^{[3
]}

Pollet, Lucien ^{[2
]}

Racz, Attila ^{[2
]}

Sakulin, Hannes ^{[2
]}

Sani, Matteo ^{[3
]}

Schieferdecker, Philipp ^{[2
]}

Schwick, Christoph ^{[2
]}

Sumorok, Konstanty ^{[1
]}

Suzuki, Ichiro ^{[8
]}

Tsirigkas, Dimitrios ^{[2
]}

Varela, Joao ^{[2
,9
]}

机构：

[1] MIT, Cambridge, MA 02139 USA

[2] CERN, CH-1211 Geneva, Switzerland

[3] Univ Calif San Diego, La Jolla, CA 92093 USA

[4] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

[5] Kyungpook Natl Univ, Taegu 702701, Kyungpook, South Korea

[6] Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy

[7] Vienna Univ Technol, A-1040 Vienna, Austria

[8] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[9] LIP, P-1000149 Lisbon, Portugal

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 2008年 / 55卷 / 01期

关键词：

data acquisition; feedback systems; multistage interconnection networks; triggering;

D O I：

10.1109/TNS.2007.911884

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The Data Acquisition System of the Compact Muon Solenoid experiment at the Large Hadron Collider reads out event fragments of an average size of 2 kB from around 650 detector front-ends at a rate of up to 100 kHz. The first stage of event-building is performed by the Super-Fragment Builder employing custom-built electronics and a Myrinet optical network. It reduces the number of fragments by one order of magnitude, thereby greatly decreasing the requirements for the subsequent event-assembly stage. Back-pressure from the down-stream event-processing or variations in the size and rate of events may give rise to buffer overflows in the subdetector's front-end electronics, which would result in data corruption and would require a time-consuming re-sync procedure to recover. The Trigger-Throttling System protects against these buffer overflows. It provides fast feedback from any of the subdetector front-ends to the trigger so that the trigger can be throttled before buffers overflow. This paper reports on new performance measurements and on the recent successful integration of a scaled-down setup of the described system with the trigger and with front-ends of all major subdetectors. The on-going commissioning of the full-scale system is discussed.

引用

页码：190 / 197

页数：8

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